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NTK 23516 Oxygen Sensor - Downstream or Upstream
| Brand | NTK 23516 |
|---|---|
| Position | Upstream and Downstream |
| Wiring Harness Length | 18.7500 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Thread Diameter | 18.000 |
| Mounting Type | Threaded |
| Product line | Direct Fit Oxygen Sensor |
| Fits | Mitsubishi · 11 vehicles |
Direct fit design. Application-specific replacement with OE-style fit, form, and function.
Heated sensor. Helps the sensor reach operating temperature faster for responsive exhaust feedback.
OE-level testing. Manufactured and tested to meet or exceed OE specifications.
Cross-references BBB Industries 13801, DENSO Auto Parts 234-4633 and DENSO Auto Parts 234-4645 for the same application. See all 18.
Direct Fit Oxygen Sensor for Mitsubishi
The NTK 23516 is a direct fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for Mitsubishi Montero and Montero Sport fitments where accurate exhaust feedback is needed for emissions control and air-fuel management.
Key Features
- Direct fit oxygen sensor for specific applications
- Heated sensor design for faster operating response
- 4-wire configuration with 18.7500 wiring harness length
- Threaded mounting with 18.000 thread diameter
- NTK 23516 part number for application matching
Detailed Description
NTK 23516 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific replacement sensors with OE-style fit, form, and function. NTK uses ceramic manufacturing expertise and extensive production testing to deliver oxygen sensors that meet or exceed OE specifications. This sensor is a strong match for Mitsubishi Montero and Mitsubishi Montero Sport applications that require a heated, threaded oxygen sensor with the correct harness length and wire count.
Fits 1997-1999 Mitsubishi Montero Sport, upstream and downstream. Fits 1995-1996 Mitsubishi Montero, upstream. Fits 1992-1994 Mitsubishi Montero, upstream. This part cross-references DENSO Auto Parts (e.g., 234-4633, 234-4645) for the same application.
What It Is Used For
- Replacing a worn oxygen sensor that can trigger emissions-related fault codes
- Restoring exhaust oxygen feedback for fuel control calculations
- Addressing rough idle, poor fuel economy, or delayed sensor response
- Correcting fitment issues on application-specific Mitsubishi exhaust systems
Installation Notes and Tips
Verify the position, emissions calibration, wire count, and connector style before installation. This NTK 23516 sensor uses a threaded mounting design and a heated 4-wire configuration, so matching the original sensor specification is important for proper installation and operation.
Quality Assurance
NTK states that its oxygen sensors are extensively tested during manufacturing to help ensure quality and reliability that meet or exceed OE specifications.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1999 | Mitsubishi | Montero Sport | — | 2.4L | L4 | Upstream | B1S1 Oxygen Sensor for Federal Emissions with OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1999 | Mitsubishi | Montero Sport | — | 2.4L | L4 | Downstream | B1S2 California emissions OE equivalent design.; Direct Fit Oxygen Sensor |
| 1998 | Mitsubishi | Montero Sport | — | 2.4L | L4 | Upstream | B1S1 Oxygen Sensor for Federal Emissions with OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1998 | Mitsubishi | Montero Sport | — | 2.4L | L4 | Downstream | B1S2 California emissions OE equivalent design.; Direct Fit Oxygen Sensor |
| 1997 | Mitsubishi | Montero Sport | — | 2.4L | L4 | Upstream | B1S1 Oxygen Sensor for Federal Emissions with OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1997 | Mitsubishi | Montero Sport | — | 2.4L | L4 | Downstream | B1S2 California emissions OE equivalent design.; Direct Fit Oxygen Sensor |
| 1996 | Mitsubishi | Montero | — | 3.0L | V6 | Upstream | B1S1 Oxygen Sensor for Federal Emissions with OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1995 | Mitsubishi | Montero | Manual | 3.0L | V6 | Upstream | B1S1 Oxygen Sensor for Federal Emissions with OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1994 | Mitsubishi | Montero | — | 3.0L | V6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1993 | Mitsubishi | Montero | — | 3.0L | V6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1992 | Mitsubishi | Montero | — | 3.0L | V6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
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